JAVA使用代码打包为jar包

最新推荐文章于 2024-01-08 13:34:40 发布

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本文介绍了一个简单的Java程序，用于将指定目录下的所有文件及其子目录压缩到一个ZIP文件中。该程序利用了Java标准库中的`JarOutputStream`来实现文件的压缩打包功能。

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import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.jar.JarEntry;
import java.util.jar.JarOutputStream;

public class ZipOperate {

	public void jar(String jarFileName, String inputFile) {
		jar(jarFileName, new File(inputFile));
	}

	private void jar(String jarFileName, File inputFile) {
		JarOutputStream out = null;
		try {
			out = new JarOutputStream(new FileOutputStream(jarFileName));
			jar(out, inputFile, "");

		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				out.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}

	private void jar(JarOutputStream out, File f, String base)
			throws IOException {
		if (f.isDirectory()) {
			File[] fl = f.listFiles();
			out.putNextEntry(new JarEntry(base + "/"));
			base = base.length() == 0 ? "" : base + "/";
			for (int i = 0; i < fl.length; i++) {
				jar(out, fl[i], base + fl[i].getName());
			}
		} else {
			out.putNextEntry(new JarEntry(base));

			FileInputStream in = null;
			try {
				in = new FileInputStream(f);
				int b;
				while ((b = in.read()) != -1) {
					out.write(b);
				}
			} finally {
				in.close();
			}

		}
	}

	public static void main(String[] args) throws IOException {
		new ZipOperate().jar("src.zip", "src");
	}

}